AT51982B - Process for the production of indigo dyes in finely divided form. - Google Patents
Process for the production of indigo dyes in finely divided form.Info
- Publication number
- AT51982B AT51982B AT51982DA AT51982B AT 51982 B AT51982 B AT 51982B AT 51982D A AT51982D A AT 51982DA AT 51982 B AT51982 B AT 51982B
- Authority
- AT
- Austria
- Prior art keywords
- finely divided
- production
- divided form
- indigo dyes
- indigo
- Prior art date
Links
- 235000000177 Indigofera tinctoria Nutrition 0.000 title claims description 7
- 229940097275 indigo Drugs 0.000 title claims description 7
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 239000000975 dye Substances 0.000 title claims description 3
- -1 aromatic carboxylic acids Chemical class 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 241001062009 Indigofera Species 0.000 description 5
- 239000002253 acid Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- DYPOHVRBXIPFIK-UHFFFAOYSA-N 2-(2-methylanilino)acetic acid Chemical compound CC1=CC=CC=C1NCC(O)=O DYPOHVRBXIPFIK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 244000019137 Indigofera linnaei Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- CMSRLFLXFXUENW-UHFFFAOYSA-L disodium;2-(3-oxido-1h-indol-2-yl)-1h-indol-3-olate Chemical compound [Na+].[Na+].N1C2=CC=CC=C2C([O-])=C1C1=C([O-])C2=CC=CC=C2N1 CMSRLFLXFXUENW-UHFFFAOYSA-L 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Indole Compounds (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur'Herstellung von Indigofarbstoffen In fein verteilter Form.
In der Stammpatentschrift Nr. 50509 wurde gezeigt, dass beim Ausblasen von Indigoleukosalzen in Gegenwart aromatischer Sulfosäuren bzw. deren Salzen fein verteilter, kolloide Indigo von äusserst leichter Verküpbarkeit ausfällt. Dieser Indigo ist noch filtrierbar, er behält seine leichte Verküpbarkeit sowohl beim längeren Stehen der Paste, als auch nach dem Eintrocknen derselben bei und besitzt hohen technischen Wert.
In ähnlicher Weise wie die aromatischen Sulfosäuren wirken nun auch aromatische Karbonsäuren, besonders vom Typus der Aryloxyessigsäuren, der aromatischen Oxykarbonsäuren usw.
Das Verfahren ist das des Stammpatentes. So wird z. B. 1 kg einer etwa 200/obigen Indigoscbmello mit ungefähr 5 kg Wasser verdünnt, sodann worden 50 9 bzw. mehr oder weniger des Salzes einer aromatischen Karbonsäure, z. B. einer Aryloxyessigsäure, einer Oxykarbonsäure, z. B. Salizylsäure, Phtalsäure usw. zugesetzt. Man bläst sodann, zweckmässig bei gewöhnlicher Temperatur aus, bis die Indigoleukoverbindung im wesentlichen oder auch ganz in Indigo übergeführt ist.
Selbstverständlich kann man an Stelle jedweder Indigoschmelze auch andere Indigoleukoverbindungen, wie z. B. Indigoküpen, verwenden. Ebenso verhalten sich die Analogen und Homologen, z. H. die Halogen-Indigweisse, o-Methylindoxyl (aus o-Tolylglyzin) usw.
Die Produkte besitzen eine in hohem Masse feine Verteilung und sind, besonders in der Garungsküpe, leicht reduzierbar. Die Produkte brauchen im übrigen bei der Herstellung nicht ganz von der betreffenden Karbonsiiure- befreit sein, was der langsamen Filtration wegen von Vorteil ist, da die betreffenden Karbonsäuren auch in kalkhaltigen Küpen nicht störend wirken.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of indigo dyes in finely divided form.
In the parent patent specification No. 50509 it was shown that when indigoleukosalts are blown out in the presence of aromatic sulfonic acids or their salts, finely divided, colloidal indigo precipitates extremely easily. This indigo can still be filtered, it retains its ease of vatting both when the paste is left to stand for a long time and after it has dried out, and it has a high technical value.
Aromatic carboxylic acids, especially of the aryloxyacetic, aromatic oxycarboxylic, etc., act in a similar way to the aromatic sulfonic acids.
The procedure is that of the parent patent. So z. B. 1 kg of about 200 / above Indigoscbmello diluted with about 5 kg of water, then 50 9 or more or less of the salt of an aromatic carboxylic acid, e.g. B. an aryloxyacetic acid, an oxycarboxylic acid, e.g. B. salicylic acid, phthalic acid, etc. added. It is then blown out, expediently at normal temperature, until the indigoleuco compound has essentially or completely converted into indigo.
Of course, in place of any indigo melt, other indigoleuco compounds, such as. B. Indigo vats, use. The analogs and homologues behave in the same way, e.g. H. the halogen indigo white, o-methylindoxyl (from o-tolylglycine) etc.
The products are extremely finely distributed and can be easily reduced, especially in the cooking vat. Moreover, the products do not need to be completely freed from the carboxylic acid in question during manufacture, which is advantageous because of the slow filtration, since the carboxylic acids in question do not have a disruptive effect even in vats containing lime.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE50509X | 1909-09-27 | ||
| DE51982X | 1910-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT51982B true AT51982B (en) | 1912-02-10 |
Family
ID=25749130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT51982D AT51982B (en) | 1909-09-27 | 1910-09-09 | Process for the production of indigo dyes in finely divided form. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT51982B (en) |
-
1910
- 1910-09-09 AT AT51982D patent/AT51982B/en active
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